参数资料
型号: X40420S14-B
厂商: Intersil
文件页数: 1/25页
文件大小: 0K
描述: IC VOLT MON DUAL SUP/SW 14-SOIC
标准包装: 50
类型: 多压监控器
监视电压数目: 2
输出: 开路漏极,开路漏极
复位: 高有效/低有效
复位超时: 可调节/可选择
电压 - 阀值: 2.6V,4.6V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOICN
包装: 管件
?
X40420, X40421
4kbit EEPROM
PRELIMINARY
Data Sheet
May 25, 2006
FN8117.1
Dual Voltage Monitor with Integrated CPU
Supervisor and System Battery Switch
FEATURES
?
?
?
?
Monitor voltages: 5V to 1.6V
Memory security
Battery switch backup
V OUT 5mA to 50mA
? Dual voltage detection and reset assertion
—Three standard reset threshold settings
(4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V)
—V TRIP2 programmable down to 0.9V
—Adjust low voltage reset threshold voltages
using special programming sequence
—Reset signal valid to V CC = 1V
—Monitor two voltages or detect power fail
? Battery switch backup
? V OUT : 5mA to 50mA from V CC ; or 250μA from
V BATT
? Fault detection register
? Selectable power-on reset timeout
(0.05s, 0.2s, 0.4s, 0.8s)
? Selectable watchdog timer interval
(25ms, 200ms, 1.4s, off)
? Debounced manual reset input
? Low power CMOS
—25μA typical standby current, watchdog on
—6μA typical standby current, watchdog off
—1μA typical battery current in backup mode
? 4Kbits of EEPROM
—16 byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
? Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Block lock protect 0 or 1/2, of EEPROM
? 400kHz 2-wire interface
? 2.7V to 5.5V power supply operation
? Available packages
—14 Ld SOIC, TSSOP
? Pb-free plus anneal available (RoHS compliant)
BLOCK DIAGRAM
APPLICATIONS
? Communications equipment
—Routers, hubs, switches
—Disk arrays
? Industrial systems
—Process control
—Intelligent instrumentation
? Computer systems
—Desktop computers
—Network servers
X40420, X40421
Standard V TRIP1 Level  Standard V TRIP2 Level  Suffix
4.6V (±1%) 2.9V(±1.7%) -A
4.6V (±1%) 2.6V (±2%) -B
2.9V(±1.7%) 1.6V (±3%) -C
See “Ordering Information” for more details
For Custom Settings, call Intersil.
DESCRIPTION
The X40420, X40421 combines power-on reset con-
trol, watchdog timer, supply voltage supervision, and
secondary supervision, manual reset, and Block
Lock ? protect serial EEPROM in one package. This
combination lowers system cost, reduces board space
requirements, and increases reliability.
Applying voltage to V CC activates the power-on reset
circuit which holds RESET/RESET active for a period of
time. This allows the power supply and system oscilla-
tor to stabilize before the processor can execute code.
V2MON
V2 Monitor
Logic
+
-
V OUT
V TRIP2
V2FAIL
V CC Monitor
SDA
WP
SCL
V CC
(V1MON)
BATT-ON
V OUT
V BATT
Data
Register
Command
Decode Test
& Control
Logic
System
Battery
Switch
Logic
Fault Detection
Register
Status
Register
EEPROM
Array
V OUT
+
V TRIP1
-
Watchdog
and
Reset Logic
Power-on,
Manual Reset
Low Voltage
Reset
Generation
V OUT
WDO
MR
RESET
X40420
RESET
X40421
LOWLINE
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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